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https://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/1402714/ne555-for-the-ne555d-when-the-power-turns-off-i-get-an-output-pulse-up-to-1-27-volts-on-the-q-line-even-though-the-r-line-is-connected-to-ground
工具与软件：
有没有办法防止这种情况发生？
您好、Craig、
我不确定 Q 和 R 线是什么意思。 您能否详细说明或提供原理图？
此致、
Chris Featherstone
SW_DISABLE 开关被闭合(引脚4 (R)接地)、并且在5V 电源关闭时、引脚3 (Q) 变为大约1.67伏并持续大约122ms？
在断电期间无法防止这种情况发生、因为在低于最小电源电压的特定偏置电平时、计时器将失去对电路的完全控制、并且输出也不受控制。
